Cheater wrench torque multiplier. Just to show what I used here, I don't recommend it at this time. https://www.amazon.com/gp/product/B00...
Milwaukee 3/4 drive cordless impact https://www.amazon.com/Milwaukee2864...

Update on the price, I must have got in on a special when I got mine for $149 now they are $249 for the Cheater wrench. I will be testing another one in a couple days because I broke this one on a wheel on the other side of the trailer and I don't want to wait for the warranty replacement so I'm getting a different one at Northern Tool. I like this one better for a couple of reasons. Here's the link to buy it online in the States, I don't know about overseas.
https://www.northerntool.com/shop/too...